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Vikentia [17]
3 years ago
8

Influenza is capable of genetic reassortment in which genetic components from two influenza strains reassort between themselves.

Which animal strains of influenza prove especially virulent when reassorted with human strains?A. dogs and catsB. ducks and swineC. cows and sheepD. goats and horses
Biology
1 answer:
tester [92]3 years ago
6 0

Answer:

The correct answer is - option B. ducks and swine.

Explanation:

Influenza virus is capable of the genetic reassortment. This reassortment involves the reassortment of genetic parts in between two influenza strain. This takes place due to the ability of influenza virus to alter or modify the structure of Hemagglutinin (HA) and neuraminidase.

Some other characters also helps them to develop different strains for different host such as mutation, antigenic drift and many other conditions. Influenza virus subtype A are belongs to the avian host so they affect the birds such as duck, swan, gesse. Other than avian variants there is another strain that affect pigs known as swan variants. These strains are virulent if reassorted with human strains.

Thus, the correct answer is - option B.

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What amino acids do trypsin and chymotrypsin cut at?
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Answer:

Trypsin cuts at lysine and arginine amino acid residues at the carboxyl end. Chymotrypsin cuts at tryosine , phenylalanine, and tryptophan amino acid residues at the carboxyl end.

Explanation:

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Trypsin cuts at lysine and arginine amino acid residues at the carboxyl end. Chymotrypsin cuts at tryosine , phenylalanine, and tryptophan amino acid residues at the carboxyl end.

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3 years ago
Samples as small as a few skin cells can potentially contain DNA. T/F
Travka [436]

<u>Answer</u>: True

<u>Explanation</u>:

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  • Samples as small as few skin cells also contain DNA and the presence of DNA in skin cells is often used to identify the DNA of a person in a crime scene.
  • Further, with the use of PCR technology, the small amount of DNA obtained from skin cells can be amplified into many copies.
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8 0
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Kay [80]

Answer:

First option is the correct one.

Explanation:

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Flash floods will be the correct answer
3 0
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